Epic's Fifth Harmony sits atop the Most Added column today with "All In My Head (Flex)," with 45 new adds on their official impact date, which only bolsters the 71 early believers that had already come on board. Meanwhile, Hollywood's Jordan Fisher brought in another 33 adds for "All About Us" this week. Republic has two in the Top 10 Most Added; Shawn Mendes' "Treat You Better" (Island/Republic) scored 25 adds while Cheat Codes X Kriss Kross' "Sex" (Casablanca/Republic) got 15. Warner Bros. posted 19 adds on RedOne's "Don't You Need Somebody'. Epic also posted 18 stations on impact for Zara Larsson's "Lush Life." And rounding things out in the Top 10 is Rihanna's "Needed Me" (WestburyRoad/Roc Nation) with 13 adds.